Re^2: What does return() mean?

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Re^3: What does return() mean? by davido (Cardinal) on Oct 27, 2014 at 22:18 UTC
It does the same as `return;`, which is an empty list in list context, and the return value evaluates to undef in scalar context. Dave	[reply] [d/l]
Re^3: What does return() mean? by AnomalousMonk (Archbishop) on Oct 28, 2014 at 02:41 UTC
If you actually want to return a code/subroutine reference see sub or the `\` operator (see Symbolic Unary Operators in perlop) `c:\@Work\Perl>perl -wMstrict -le "sub S { return sub { print qq{hiya $_[0]}; }; } ;; my $coderef = S(); $coderef->('sailor') " hiya sailor` [download]	[reply] [d/l] [select]
Re^3: What does return() mean? by Anonymous Monk on Oct 28, 2014 at 02:53 UTC
It doesn't answer my question... I want to know what return () does... For example, if I'm correct, return [] returns an array ref right? So, does return () return a subroutine ref? Yes, `[ ]` is an array ref, and no () is not a reference of any kind (not a subroutine ref) References are explained in perlreftut#Making References , references quick reference These are all the same (as documente in return, they return nothing (empty list) or undef , depending on context (list or scalar) ) `sub roy { return; } sub roy { return } sub roy { return(); } sub roy { return() } sub roy { return () }` [download] These are all the same (return an array ref) `sub roy { return []; } sub roy { return [] } sub roy { return([]); } sub roy { return([]) } sub roy { return ([]) }` [download] See Tutorials: Context in Perl: Context tutorial, "List" Is a Four-Letter Word, Easy Reference for Contexts	[reply] [d/l] [select]
Re^3: What does return() mean? by Discipulus (Canon) on Oct 28, 2014 at 08:39 UTC
It doesn't answer my question.. this is because you have not formulated the right question, as the agent Spooner in I robot, dear. Consider this other formulation: 'What is the difference between `return ();` and `return [];`?' For completness you have to know there is also `return {};` that returns a reference to an anonymous hash. HtH L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l] [select]